Scientists study the world and learn about things using a process called the scientific method(方法). By asking important questions and1the answers, it is possible to make amazing discoveries! Sometimes a scientist is2to answer his own questions, but if he has taken good notes another scientist may come along later who is able to use new knowledge to answer it.
When you use the scientific method to3an experiment, you start by making observations(观察) about something that4you. Based on your observations, you make a hypothesis. This is using5you know to make a smart guess about what you think could happen. Then you are ready to begin your experiment. All6your experiment you take down notes, which are7  experiment date(资料). You are constantly making observations during this time. You may make discoveries that cause you to improve your experiment as you go.8, you conclude your experiment and begin to look over your notes to decide what it all means. Based on what you have learned, you make a final statement about 9your hypothesis was correct or not. You have to have reasons and evidence to support what you are saying.
Using the scientific method can be difficult, but rewarding. Because all the steps are organized in a process, the10are more valid(可信的). When you provide observations as evidence to support what you are saying, your ideas are more likely to be accepted.

1. 1.
   1. A.
      waiting for
   2. B.
      searching for
   3. C.
      worrying about
   4. D.
      complaining about
2. 2.
   1. A.
      unable
   2. B.
      sure
   3. C.
      ready
   4. D.
      surprised
3. 3.
   1. A.
      read
   2. B.
      refuse
   3. C.
      prevent
   4. D.
      conduct
4. 4.
   1. A.
      hurts
   2. B.
      represents
   3. C.
      interests
   4. D.
      attacks
5. 5.
   1. A.
      what
   2. B.
      when
   3. C.
      why
   4. D.
      which
6. 6.
   1. A.
      without
   2. B.
      including
   3. C.
      except
   4. D.
      during
7. 7.
   1. A.
      controlled
   2. B.
      arranged
   3. C.
      called
   4. D.
      carried
8. 8.
   1. A.
      Obviously
   2. B.
      Suddenly
   3. C.
      Finally
   4. D.
      Mostly
9. 9.
   1. A.
      whether
   2. B.
      what
   3. C.
      how
   4. D.
      when
10. 10.
    1. A.
       problem
    2. B.
       results
    3. C.
       services
    4. D.
       aims

In Canada and the United States, people enjoy entertaining (请客) at home. They often invite friends over for a meal, a party or just for coffee and conversation (谈话).
Here are the kinds of things people say when they invite someone to their homes:
“Would you like to come over for dinner this Saturday night?” “Hey, we’re having a party on Friday. Can you come?”
To reply (回答) to an invitation , either say ‘thank you’ and accept (接受), or say you’re sorry and give an excuse. “Thanks, I’d love to. What time would you like me to come?” or “Oh, sorry . I’ve tickets for a movie.”
Sometimes, however, people use expressions (习惯用语) that sound like invitations but which are not real invitations . For example; “Please come over for a drink sometime.” “Why not get together for a party sometime?” “Why don’t you come over and see us sometime soon?”
They are really just polite ways of ending a conversation. They are not real invitations because they don’t mention (提到) a certain time or date. They just show that the person is trying to be friendly. To reply to expressions like these, people just say “Sure, that would be great!” or “OK. Yes, thanks.”
So next time when you hear what sounds like an invitation, listen carefully. Is it a real invitation or is the person just being friendly?
Title: Real   【小题1】   or not

Tom gets up at half past seven in the morning. He has an egg and some milk for his breakfast. Then he begins to go to school slowly. When he is on his way to school, he thinks, “I tell my teacher my mother is ill on Monday morning. I tell him my bike is wrong on Tuesday. What do I tell my teacher today?”
Tom thinks over but he doesn’t find a good idea before he gets to school.“May I come in?” Tom shouts at the door of the classroom.
“ Oh, my boy,” says Mr Green. “ Please look at the clock on the wall. What time is it now?”
“ It’s ten past eight,” answers Tom.
Mr Green is not happy. “ You are late for class three times this week. If all the students are like you, the clock is no use, I think.”
“ You are right, Mr Green,” says Tom. “ If we don’t have the clock, how do you know I am late for class?”
【小题1】Tom has breakfast             .